JP5832310B2 - Method for calibrating the swivel stroke of a yarn feeder arranged in a yarn splicing device and a yarn splicing device for carrying out the method - Google Patents

Description

  The present invention is a method for calibrating the swivel stroke of a yarn feeder (Fadenzubringer), which is arranged in a yarn splicing device of a textile machine for producing a traversed package, and which can be driven by a step motor, The step motor rotates the yarn feeder from the zero position to a predefinable working position, and positions the yarn end portion prepared at this time in the yarn splicing passage of the yarn splicing device with a predetermined length. Relates to a method that can be controlled.

  Furthermore, the present invention relates to a yarn splicing device for carrying out such a method.

  A yarn splicing device equipped with a yarn feeder for positioning two yarn ends in a splicing passage provided in a prism-shaped splicing head (Spleissprisma) is used in the textile industry. In connection with winders, it has been known for a long time and is described in detail in numerous patent documents.

  Using such a splicing device, two yarn ends can be entangled pneumatically (pneumatic) to form a knotless joint, in which case both yarn ends are In the ideal case, the joint is entangled so that it has approximately the same strength as the yarn and almost the same appearance as the yarn. This means that when a yarn break or a defined clearer cut occurs during the winding process in the working part or the yarn winding part of the automatic winding machine, the yarn end generated at this time is a special pneumatic type. Means that it is preferably first brought back to the range of the splicing device by means of a gripper tube and a suction nozzle. In this case, the suction nozzle takes back the “upper yarn” from the traverse package and inserts the upper yarn into a yarn splicing passage provided in a prismatic yarn splicing head of the splicing device.

  The "lower thread" from the yarn feeding bobbin positioned at the winding position is correspondingly inserted into the piecing passage of the prismatic piecing head by a gripper tube adapted to apply negative pressure. . At the time of insertion into the yarn splicing passage, the yarn is further fed into a yarn clamping device and a yarn cutting device arranged above and below the yarn splicing passage.

  The yarn is then cut to a predetermined length by a yarn cutting device and prepared for the subsequent splicing process in a holding and untwisting tube. This is because the yarn ends are sufficiently removed first in the holding / untwisting tube, and then the yarn feeders enter the yarn joining passages of the yarn joining head, and both yarn ends are in the yarn joining passages. Means that they can be entangled in a pneumatic manner in this yarn splicing passage.

  For example, pages 1.5.9 to 1.5.9 (4), 1.5.12 and 1.5.14 of the handbook “AUTOCONER System 238” of the Schramfhorst company. As described on page, in this known and proven splicing device, the various functional elements are driven via so-called cam disk drives. That is, a cam disk unit is supported in the drive device housing of the yarn splicing device, and this cam disk unit is connected to a drive device unique to the winding unit via, for example, an insertion coupling. The individual cam disks themselves are connected to the functional elements of the splicing device via corresponding lever link mechanisms.

  In connection with the yarn splicing device, it is known to those skilled in the art that the following points are decisive for the strength and appearance of the pneumatically formed yarn joint.

  In addition to the orderly preparation of the yarn ends in the holding and untwisting tube and the sufficient entanglement of the yarn ends in the yarn splicing passage, both the yarn splicing passages in the prismatic splicing head, in particular The overlap length of the yarn end is extremely important.

  In an automatic traverse winder, generally, for example, yarns having greatly different characteristics with respect to the yarn count and / or the yarn material are processed. Therefore, when changing the yarn lot, it is important to obtain an orderly yarn splice. It is advantageous if each of these parameters is also precisely adapted to the new thread.

  The preparation of the pneumatic type of the yarn end in the holding / untwisting tube and the degree of entanglement of the yarn end in the splicing passage are relatively easily adjusted by the opening time of the corresponding electromagnetic pneumatic valve. In addition, when changing the lot, it can be changed by remote control without any problem, for example via the central control unit of the textile machine.

  On the other hand, it is more difficult to change the overlap length of both yarn ends to be positioned in the yarn splicing passage, and most known yarn splicing devices require manual interference by hand each time. This means that at the time of lot change, the stoppers for the yarn feeders of each yarn splicing device must be individually newly adjusted by hand in each of a large number of working units or yarn winding units of one automatic traverse winder. It means you have to.

  Such manual adjustment of the thread feeder stopper is cumbersome and time consuming, so in the past it has already been possible to remotely control the thread feeder's swivel stroke and thus splice in the splicing passage Yarn splicing devices have been developed that allow remote control adjustment of the overlap length of yarn ends.

  German Offenlegungsschrift 19921855 describes a splicing device which makes it possible to adjust the swivel stroke of the yarn feeder, for example from a central control unit of a textile machine. This known yarn splicing device has a drive housing, which has a grooved drum. The grooved drum has a plurality of groove tracks formed differently from each other. The grooved drum is driven by a reversible step motor. This step motor is connected to the central control unit of the winder via a control line. A control cam travels along each groove track. These control cams operate the functional elements of the yarn splicer via corresponding link mechanisms. For example, a thread feeder can be controlled via one of these groove tracks formed with great effort. The groove track for the thread feeder extends partly in a step-like manner, and in combination with a special lever linkage, allows a defined adjustment of the swivel stroke of the thread feeder.

  However, the structure of the splicing device described in the above-mentioned German Patent Application Publication No. 19921855 is extremely complicated and, in particular, is expensive due to its relatively laborious grooved drum. .

  Can be controlled via the central controller of the automatic winding winder so that the prepared yarn end is cut into a predetermined length and positioned within the yarn splicing passage of the splicing device with a preset length. The yarn splicing device provided with the yarn feeder is based on German Patent Application Publication No. 10224080, German Patent Application Publication No. 10224081 or German Patent Application Publication No. 102006006390. It is well known.

  German Offenlegungsschrift 10224080 describes a splicing device in which, for example, the yarn feeder has a separate drive which can be controlled as defined. That is, the working position that can be set in advance by a step motor having a swivel stroke in which the yarn feeder that abuts the mechanically adjustable stopper at its zero position can be adjusted via the central controller of the automatic traverse winder. Can be turned to.

  German patent application DE 102 240 81 also describes a comparable splicing device. In this known yarn splicing device, the working position of the yarn feeder can be set by an adjustable stopper. The stopper for the yarn feeder, which is regulated by the stepping motor and is adjustable, is installed in the area of the distributor housing of the yarn splicer, in which case the swivel stroke of the yarn feeder depends on the angular position of the stopper. Thus, the overlapping length of the yarn end portion in the yarn splicing passage can also be set.

  However, the mechanical stopper is a disadvantage in the yarn splicing device described above. During the winding process, the yarn feeder must be activated for each splicing process, and thus on entry to the zero position (DE 102240080) or to the working position. At the time of entry (German Patent Application No. 10224081) it is always relatively hard and collides with the corresponding stopper, so these devices almost avoid damage to the thread feeder or its bearing device over time. Can not do it.

  Therefore, in the past, it has already been proposed to monitor the positioning of the functional element of the yarn splicing device by means of a rotation angle sensor and thus to monitor the swivel stroke of the yarn feeder.

  A yarn splicing device constructed in this way is described, for example, in German Offenlegungsschrift 10 2006006390. Even though mechanical damage in the yarn feeder and its bearing can be sufficiently avoided by the use of such a rotation angle sensor, such a splicing device is actually particularly expensive. It cannot spread based on manufacturing cost.

German Patent Application Publication No. 19921855 German Patent Application Publication No. 10224080 German Patent Application No. 10224081 German Patent Application Publication No. 102006006390

  In view of the known prior art listed above, the underlying problem of the present invention is that a yarn feeder that is swiveled into a predetermined working position is desired in a splicing process that is sometimes required during a normal winding process. It is to provide a method that can ensure relatively easily that the working position is actually accurately positioned.

  It is a further object of the present invention to provide a splicing device that makes it possible to carry out the method according to the invention.

  In this case, it is desirable to eliminate the need for any mechanical stopper when positioning the yarn feeder, particularly when a yarn splicing process is required during the winding process.

  In order to solve this problem, in the method of the present invention, the yarn feeder is placed outside its normal swivel stroke from its zero position set by the sensor to calibrate its swivel stroke. It is swung until it comes into contact with the stopper, and during the turning process, the number of work steps performed by the step motor is counted and compared with the number of times set as the reference value of the work step, and a correction factor is formed by the comparison. Then, in the turning process required during normal winding operation in the middle of the yarn splicing process, the yarn feeder in the work position that can be defined by taking the correction factor into consideration during the turning process. Assured accurate positioning.

  Furthermore, in order to solve the above-mentioned problem, in the configuration of the yarn splicing device of the present invention, the yarn feeder is movable by a step motor, and a hall sensor is provided to position the yarn feeder at its zero position. The Hall sensor and the step motor are connected to an evaluation device of the working unit computer, and a stopper is arranged at a specified position outside the normal turning stroke of the yarn feeder.

  Advantageous embodiments of the method according to the invention are described in claims 2-8.

  Advantageous embodiments of the splicing device according to the invention are described in claims 10-14.

  In particular, the method according to the invention can be implemented in a remote control with an accurate calibration of the swivel stroke of the yarn feeder arranged in the splicing device before the start of the winding process and thus before the splicing process. As a result, there is the advantage that during the subsequent winding process, an accurate positioning of the yarn feeder is ensured in the yarn splicing process.

  That is, prior to the start of the winding process, the yarn feeder will make a normal swiveling of the yarn feeder from the zero position set by the sensor in order to determine the actual value of its swiveling stroke or to define a correction factor. Only when it is swung to the stopper located outside the stroke, mechanical contact with the stopper occurs. In the yarn splicing process required in the subsequent winding operation, the correction factor (for example, the difference between the actual value and the reference value) obtained by comparing the actual value of the swivel stroke of the yarn feeder with the reference value is taken into account The yarn feeder is then positioned each time (by adding or subtracting the difference), but during this splicing process, the yarn feeder operates completely contactless. That is, the yarn feeder does not contact any mechanical stopper during normal splicing operation, either in its zero position or in the working position.

  As claimed in claim 2, in an advantageous embodiment of the invention, the calibration of the swivel stroke of the thread feeder is initiated manually by the operator. Such a manual start of calibration has the following advantages in particular: That is, the operator can always interfere without any problem when it is considered that the yarn splicing result of the splicing device is below a predetermined standard.

  Instead of starting the yarn feeder calibration process manually, the calibration process can also be started automatically by a machine-specific controller, as claimed in claim 3. In such a case, the machine-specific control device automatically starts the calibration of the swivel stroke of the yarn feeder at a definable time interval as claimed in claim 4 or claims As described in item 5, each is automatically started after a settable number of times of the piecing process. In both cases, it is guaranteed that the splicing result is kept at a definable level.

  In an advantageous embodiment as claimed in claim 6, the machine-specific control device immediately and automatically starts calibration of the swivel stroke of the yarn feeder, even if the splicing result is defective. . That is, the machine-specific control device automatically ensures that the yarn splicing result is maintained at a high level.

  In an advantageous embodiment as claimed in claim 7 and claim 8, the yarn feeder is moved from the zero position to the predetermined stopper using different working steps several times in succession during the calibration process. It is made to turn until it contacts. Since the number of working steps required to accurately position the yarn feeder on the stopper is not known exactly, the yarn feeder is first swiveled with a slightly over-increasing number of working steps, so that The yarn feeder springs back a little after abutment against the stopper. From this position, which is slightly spaced from the stopper, the yarn feeder is subsequently turned back to its zero position again. When the yarn feeder is turned back, the number of work steps of the step motor necessary for returning the yarn feeder from the respective position to the zero position set by the sensor is counted. That is, the expected swivel stroke of the thread feeder is estimated from the number of work steps performed by the step motor to position the thread feeder again at its zero position. The expected swivel stroke is taken into account during the subsequent swiveling process of the yarn feeder, for example by reducing the number of work steps.

  With the previously described method, it is relatively easy to determine the exact actual swivel stroke of the thread feeder between the zero position set by the thread feeder sensor and the exact contact with the stopper. And can be obtained relatively quickly and reliably.

  The use of a step motor has the following advantages. That is, the stepping motor can be easily controlled at an accurate angle depending on the number of current pulses introduced, and therefore a large additional control effort is not required. In addition, such stepper motors marketed as mass-produced products are relatively inexpensive and have excellent reliability and long life.

  According to the ninth aspect of the present invention, in the configuration of the yarn splicing device of the present invention, the yarn splicing device positions the step feeder for turning the yarn feeder and the yarn feeder at its zero position by the sensor. And a hall sensor corresponding to a permanent magnet arranged in the yarn feeder. Both the step motor and hall sensor are connected to a working unit computer having an evaluation device.

  Further, such a yarn splicing device has a stopper arranged at a specified position outside the normal swivel stroke of the yarn feeder. Such a stopper makes it possible to use the calibration method according to the invention without problems. That is, when the yarn splicing device equipped in this way is used, it is easy to accurately detect each actual turning stroke of the yarn feeder between the zero position which can be set by the sensor of the yarn feeder and a predetermined stopper. Thus, the correction factor can be easily formed.

  Such a stopper arranged outside the normal swivel stroke of the yarn feeder is formed as a stopper fixedly incorporated in the distributor housing of the yarn splicing device as described in claim 10. Or as defined in claim 11, formed by a removable stopper gauge which can be positioned on the splicing device temporarily as required. Both embodiments have very advantageous configurations, each with its own advantages. In other words, the two stopper forms make it easy to accurately calibrate the turning stroke of the yarn feeder of the yarn splicing device.

  The stopper fixedly incorporated in the distributor housing as described in claim 10 makes it possible to easily avoid, for example, storing the stopper and preparing it if necessary. . In addition, such a fixed stopper ensures that the stopper is always positioned as prescribed.

  On the other hand, the stopper gauge described in claim 11 has an advantage that it can be used later. That is, this stopper gauge can be used even in a textile machine in which the yarn splicer does not have a fixed stopper. Thus, with such a stopper gauge, an old-fashioned automatic traverse winder can be improved later so that the method according to the invention for calibrating the swivel stroke of the yarn feeder of the splicing device can be used. be able to.

  In an advantageous embodiment as claimed in claim 12, each thread winding-up section or each working section is provided with an operating device that can be manually switched in a manual manner. The swivel stroke calibration can be initiated by the operator. That is, this operating device allows the operator to immediately interfere as needed.

  However, as described in claim 13, the yarn splicing device may be equipped with a control device unique to the machine. This control device automatically starts the calibration of the swivel stroke of the yarn feeder, for example at a predefinable time interval or after a predefinable number of yarn splicing processes. This automatically takes into account that the yarn splicing part does not fall below a presettable level by such a machine-specific control device.

  Naturally, as described in claim 14, the yarn rewinding part or working part is additionally manually switched manually, although its yarn feeder is automatically calibrated by a machine-specific control device. Possible devices may be provided. In the working section equipped in this way, the yarn splicing device can be corrected quickly and without problems as needed. That is, in such a working part, it is possible to relatively easily prevent the formation of an unacceptable yarn splicing part.

It is a side view which shows the working part of the automatic traverse winder provided with the yarn splicing device which can calibrate the turning stroke of the yarn feeder by the method according to the present invention. FIG. 3 is a plan view of a yarn splicing device including a yarn feeder that can be positioned at a predetermined zero position by a sensor and can be turned to a preset work position or stopper position by a step motor. It is a perspective view of the yarn splicing device provided with a stopper fixedly installed in the distributor housing of the yarn splicing device, which is arranged outside the swivel stroke of the yarn feeder. It is a perspective view of the yarn splicing device provided with the detachable stopper gauge that can be positioned on the yarn splicing device temporarily as needed.

  In the following, embodiments for carrying out the invention will be described in detail with reference to the drawings.

  FIG. 1 shows an embodiment of an automatic traverse winder 1. In FIG. 1, a working unit or a yarn winding unit of a textile machine that manufactures a traverse winding package is indicated by reference numeral 2 as a whole. Such an automatic traverse winder 1 has a number of working sections 2 of the same type between its out ends (not shown). In these working sections 2, a plurality of spinning cups 9 produced in a ring spinning machine are advantageously wound back to form a large volume traverse package 15. After the traversing package 15 is completed, it is delivered to a mechanical-length traversing package transport device 21 by a service unit (also not shown) that operates automatically.

  Such an automatic winding winder 1 further comprises a logistic device, for example a logistic device in the form of a bobbin / winding tube conveying system 3. FIG. 1 shows only the cup supply section 4, the reversible drive storage section 5, the lateral transport section 6 leading to the working unit 2, and the winding tube return section 7 of the bobbin / winding tube transport system 3. Not.

  In the bobbin / winding tube transfer system 3, the spinning cup 9 or the empty tube circulates in a state where the bobbin / winding tube transfer system 3 is positioned so as to be directed vertically to the transfer disk 8. The fine spinning cups 9 provided via the bobbin / winding tube transfer system 3 form a large volume traverse winding package 15 at the feeding position AS located in the working unit 2 within the range of the horizontal transfer section 6. To be rolled up.

  Such an automatic traverse winder 1 is generally further equipped with a central control unit 49. The central control unit 49 is connected to the work section computer 29 of each work section 2 via, for example, a machine bus 50. Various devices of the working unit 2 can be controlled as prescribed by the central control unit 49 and / or the working unit computer 29.

  As is known per se, each working unit 2 has various devices that enable an orderly operation of the working unit 2, for example.

  Such a working unit 2 includes, for example, a winding device 24. The winding device 24 has a package frame 28 that is pivotably supported. The traverse package 15 is held on the package frame 28 so as to be freely rotatable. The traverse package 15 is mounted on the grooved drum 14 during the winding process, as illustrated in the embodiment of FIG. The grooved drum 14 entrains the traverse package 15 by frictional coupling, and further produces an orderly traverse of the yarn wound around the traverse package 15. Such a working unit 2 is further supported so as to be able to turn within a limited range around the turning axis 16 and can be loaded with a negative pressure for handling the upper thread 31, that is, can be subjected to a negative pressure. It is possible to apply a negative pressure to handle the lower thread 32, which is supported so as to be able to swivel within a limited range around the suction axis 12 and the swivel axis 26, that is, a negative pressure can be applied. The gripper tube 25 is provided. Further, each working unit 2 includes a pneumatic (pneumatic) yarn splicing device 10. The yarn splicing device 10 is arranged slightly shifted backward with respect to the normal yarn path of the working unit 2.

  Further, each of the working units 2 may include an operation device 61 that can be manually switched by an operator as shown in FIG. Via this operating device 61, the calibration of the swivel stroke of the yarn feeder 30 can be started as required.

  Such a splicing device 10 has, in particular, each a prismatic splicing head 17, as can be seen in particular in FIGS. 2 or 3 and 4. The prismatic yarn splicing head 17 is provided with a pneumatic splicing passage 23 that can be loaded in a pneumatic manner. In this case, the splicing passage 23 is fixed to a distributor housing 13 provided in the splicing device 10. .

  Furthermore, such a yarn splicing device 10 has a yarn feeder or yarn feeder 30 supported so as to be pivotable, and a cover element 11 supported so as to be pivotable. In the distributor housing 13, a holding / untwisting tube 34 is further fitted. These holding / untwisting pipes 34 are loaded with compressed air as prescribed, that is, the holding / untwisting pipes 34 are supplied with compressed air as prescribed. Yes. The holding / untwisting tube 34 serves as necessary to sufficiently remove the yarn twist from the yarn ends of the upper yarn and the lower yarn before piecing.

  In the range of the yarn splicing device 10, upper and lower yarn clamping / cutting devices (not shown) are further arranged.

  In the embodiment shown in FIG. 2, the yarn splicing device 10 has an electric motor type individual drive device arranged in the splicer housing 35. This individual drive is preferably formed as a step motor 36 and connected to the working computer 29 via a plurality of signal lines 54. As can be seen from the drawing, a drive pinion 37 is disposed on the motor shaft of the step motor 36, and this drive pinion 37 meshes with an outer tooth row 38 provided in the control segment 39. The control segment 39 is rotatably supported on a support shaft 40 within a limited range, and is connected to a lever mechanism 42 via a fixing means 41. The lever mechanism 42 is also disposed on the support shaft 40. The lever mechanism 42 has a first lever 43, and a coupling member 45 for operating the yarn clamping / cutting device is pivotally attached to the first lever 43 via a connecting shaft 44. . The lever mechanism 42 further includes a second lever 46, and the second lever 46 is coupled to the cover element 11 via a coupling member 48.

  A spring element 47 is connected between the levers 43, 46, and this spring element 47 entrains the second lever 46 in a frictionally coupled manner via the first lever 43 when the control segment 39 turns. To do.

  In this case, the spring element 47 on the one hand can cause damage to the splicing device 10 on the basis of the early installation of the cover element 11 on the prismatic splicing head 17 and the further pivoting of the control segment 39. On the other hand, a large swivel stroke of the control segment 39 is possible in combination with a corresponding configuration of the thread clamping and cutting device. The control segment 39 has second pivot means, preferably in the form of a ball joint connection 52, in the area of its peripheral surface 51. A control link mechanism 53 of the yarn feeder 30 is connected.

  As shown in FIGS. 2, 3 and 4, the yarn splicing device 10 for carrying out the method according to the present invention has a hall sensor 56 in the range of the splicer housing 35 of the yarn splicing device 10. ing. The hall sensor 56 is connected to the working unit computer 29 via a signal line 55. The hall sensor 56 corresponds to the permanent magnet 57 disposed in the extension 19 on the rear side of the yarn feeder 30.

  That is, the working unit computer 29 can control the step motor 36 so that the yarn feeder 30 is always positioned at the zero position I defined by the sensor in relation to the corresponding signal of the Hall sensor 56. . However, the zero position I of the yarn feeder 30 may differ slightly from one yarn splicing device to another, for example in relation to the mounting position of the hall sensor 56 and / or the arrangement of the permanent magnets 57. The yarn feeder 30 can be swung from each zero position I of the yarn feeder 30 to a predefinable position in the range of the prismatic yarn splicing head 17.

  Prior to the start of the winding process, the thread feeder 30 is swung until it abuts against the stoppers 18, 20 located outside the normal swivel stroke in order to calibrate its swivel stroke according to the invention.

  In an advantageous embodiment, the yarn feeder 30 is swiveled in sequence several times, each in contact with the stoppers 18, 20 arranged outside the normal swivel stroke of the yarn feeder 30 with correction of the swivel stroke, At this time, an appropriate length of the turning stroke between the zero position and the stopper is sequentially obtained. Next, a correction factor KF (for example, a difference between the determined length of the swing stroke and the known reference value) from the determined length of the swing stroke and the known reference value by the evaluation device incorporated in the working unit computer 29. Is calculated. This correction factor KF is later used to accurately position the yarn feeder 30 at a predetermined working position. That is, in the subsequent splicing process during the standard winding process, each of the yarn feeders 30 is positioned in an accurate working position without contact. Then, in this definable working position, both yarn ends defined for each piecing process also always have a precisely defined overlap in the piecing passage 23 of the prismatic piecing head 17. Positioned.

DESCRIPTION OF SYMBOLS 1 Automatic traverse winder 2 Working part 3 Bobbin and winding pipe conveyance system 4 Cup supply section 5 Storage section 6 Lateral conveyance section 7 Winding pipe return section 8 Conveying disk 9 Spinning cup 10 Yarn splicing device 11 Cover element 12 Suction nozzle 13 Distributor housing 14 Grooved drum 15 Traverse package 16 Rotating axis 17 Yarn splicing head 18 Stopper 19 Extension 20 Stopper 21 Traverse package conveying device 23 Yarn splicing passage 24 Winding device 25 Gripper tube 26 Rotating axis 28 Package frame 29 Work Section computer 30 Thread feeder 31 Upper thread 32 Lower thread 34 Holding / untwisting pipe 35 Splicer housing 36 Step motor 37 Drive pinion 38 Outer teeth 39 Control segment 40 Bearing shaft 41 Fixing means 42 Lever mechanism 43 First mechanism Lever 44 Connection shaft 45 Coupling member 46 Second lever 47 Spring element 48 Coupling member 49 Central control unit 50 Machine bus 51 Peripheral surface 52 Ball joint connection part 53 Control link mechanism 54 Signal line 55 Signal line 56 Hall sensor 57 Permanent magnet 61 Operating device AS Feeding position

Claims (14)

A method for adjusting the swivel stroke of a yarn feeder, driven by a step motor, arranged in a yarn splicing device of a textile machine for producing a traversed package, the method comprising: In a method in which the step motor is controllable to pivot to a definable working position and position the yarn end prepared at this time in a yarn splicing passage of the yarn splicing device with a pre-defined length ,
In order to calibrate the swivel stroke of the thread feeder (30), a stopper (18, 18) arranged outside the normal swivel stroke of the thread feeder (30) from its zero position (I) set by the sensor. 20) until it touches,
During the turning process, the number of work steps performed by the step motor (36) is counted and compared with the number set as the reference value of the work step,
The comparison forms a correction factor (KF),
In the subsequent turning process required during the normal winding operation in the middle of the yarn splicing process, the yarn supply at the work position that can be defined is considered by taking the correction factor (KF) into consideration during the turning process. Ensuring the correct positioning of the vessel (30),
A method for adjusting the swivel stroke of a yarn feeder arranged in a yarn splicing device.   The method according to claim 1, wherein the calibration of the swivel stroke of the thread feeder is initiated manually by an operator.   2. The method as claimed in claim 1, wherein the calibration of the swivel stroke of the yarn feeder (30) is initiated by a machine-specific controller (29, 49).   4. The method according to claim 3, wherein the calibration of the swivel stroke of the thread feeder (30) is automatically started at a configurable time interval by means of a machine-specific controller (29, 49).   4. The method as claimed in claim 3, wherein the calibration of the swivel stroke of the yarn feeder (30) is automatically started each time after a configurable number of yarn splicing processes by means of a machine-specific control device (29, 49).   2. The method according to claim 1, wherein when a defective splicing result is detected, the calibration of the swivel stroke of the yarn feeder (30) can be initiated by the machine specific controller (29, 49).   The yarn feeder (30) is swung from the zero position (I) until it comes into contact with the stopper (18, 20) several times in the course of calibration, using different numbers of work steps. The method described.   After contacting the stopper (18, 20), the thread feeder (30) is turned back to the zero position (I) each time, and in this case, the number of work steps of the step motor (36) required for this is determined. 8. A method according to claim 7, which counts and takes into account the next contact of the yarn feeder (30) with the stopper (18, 20).   2. The yarn splicing device for carrying out the method according to claim 1, wherein the yarn feeder (30) is movable by a step motor (36) and positions the yarn feeder (30) in its zero position (I). A hall sensor (56) is provided, and the hall sensor (56) and the step motor (36) are connected to the evaluation device of the working unit computer (29), and the yarn feeder (30) A yarn splicing device, characterized in that a stopper (18, 20) is arranged at a specified position outside a regular turning stroke.   The stopper disposed outside the normal swivel stroke of the yarn feeder (30) is a stopper (18) fixedly incorporated in the distributor housing (13) of the yarn splicing device (10). The yarn splicing device described.   A stopper disposed outside the normal swivel stroke of the yarn feeder (30) is formed by a removable stopper gauge (20), and the stopper gauge (20) is primarily positioned on the yarn splicer (10). 10. The splicing device according to claim 9, which is possible.   Each working section (2) is provided with an operating device (61) that can be manually switched in a manual manner so that the turning stroke of the yarn feeder (30) is started to be calibrated by the operating device (61). The yarn splicing device according to claim 9.   10. Yarn according to claim 9, wherein a machine-specific control device (29, 49) is provided, which automatically initiates the calibration of the swivel stroke of the yarn feeder (30). Joint device.   The operating device (61) for manually starting the calibration of the swivel stroke of the yarn feeder (30) is also a machine-specific control device for automatically starting the calibration of the swivel stroke of the yarn feeder (30). The yarn splicing device according to claim 9, wherein (29, 49) is also provided.

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